Hey tomaparavian,
Thanks for reaching out for support. We understand you're having issues sharing notes. We'd be happy to help.
The biggest thing that stands out here is that you have your device in Low Power Mode which prevents iCloud syncing and seems like the most likely reason you may be experiencing this behavior from the screenshot you've provided us with. Please disable this feature under Settings > Battery, ensure you're connected to a reliable network whether that be cellular or Wi-Fi, and test things out further.
We hope this information helps out. For more info on sharing notes in iCloud, check out: Share your notes on your iPhone, iPad, or iPod touch
Take care!